Metaglossary.com - Definitions for "{term}"

Keywords: cruel, reckless, annoyance, wicked, malicious

wicked and cruel behavior

wordnet.princeton.edu

reckless or malicious behavior that causes discomfort or annoyance in others

wordnet.princeton.edu

Keywords: diabolical, devilry, mischief, malignant, conduct

Diabolical conduct; malignant mischief; devilry.